1887

Abstract

Three strains (YZ01, YZ02 and YZ03) of Gram-stain-positive, facultatively anaerobic rods were isolated from the forestomach contents collected from a captive male proboscis monkey () at Yokohama Zoo in Japan. Phylogenetic analysis of the 16S rRNA gene sequences revealed that these strains belonged to the genus . Based on the sequence similarity of the 16S rRNA gene, subsp. JCM 15610 was the closest phylogenetic neighbour to YZ01. Sequence analyses of two partial concatenated housekeeping genes, the RNA polymerase alpha subunit () and phenylalanyl-tRNA synthase alpha subunit () also indicated that the novel strains belonged to the genus . The average nucleotide identity and digital DNA–DNA hybridization (dDDH) between subsp. and YZ01 were 85.9 and 31.4 %, respectively. The phylogenetic tree based on the whole genomic data of strains YZ01, YZ02 and YZ03 suggested that these three strains formed a single monophyletic cluster in the genus , indicating that it belonged to a new species. The DNA G+C content of strain YZ01 was 51.6 mol%. The major fatty acids were C and C ω9. Therefore, based on phylogenetic, phenotypic and physiological evidence, strains YZ01, YZ02 and YZ03 represent a novel species of the genus , for which the name sp. nov. is proposed with the type strain YZ01 (=JCM 33769=DSM 110539).

Funding
This study was supported by the:
  • Core Research for Evolutional Science and Technology (Award JPMJCR17A4)
    • Principle Award Recipient: IkkiMatsuda
  • Japan Society for the Promotion of Science (Award 19KK0186)
    • Principle Award Recipient: KazunariUshida
  • Japan Society for the Promotion of Science (Award 19H03308)
    • Principle Award Recipient: IkkiMatsuda
  • Japan Society for the Promotion of Science (Award 19K16241)
    • Principle Award Recipient: TakashiHayakawa
  • Japan Society for the Promotion of Science (Award 18K14590)
    • Principle Award Recipient: SayakaTsuchida
  • Japan Society for the Promotion of Science (Award 18J40006)
    • Principle Award Recipient: NamiSuzuki-Hashido
  • Japan Society for the Promotion of Science (Award 17K15203)
    • Principle Award Recipient: NamiSuzuki-Hashido
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2021-04-27
2024-04-20
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